Journal of Applied Polymer Science · 2004 · 298 citations · 17 references
EngineeringMaterials EngineeringMaterials SciencePolymer ChemistryPolymer EngineeringPolymer MaterialsMembrane CharacterizationMembrane EngineeringMembrane MaterialsMembrane MorphologyPolymer MembranesPolymeric MembranesAdditivesAsymmetric MembranesMembrane Morphology FormationMorphological Characterization Of Cast MembranesPolymer Membrane MorphologyPolymer Membrane StructurePolymeric Composite MembranesSolvent Effects On Membrane Formation
Abstract Asymmetric poly(vinylidene fluoride) (PVDF) membranes were cast with commercial‐grade Kynar K760 polymer pellets and four different solvent systems: N,N ‐dimethylacetamide (DMAc), N,N ‐dimethylformamide, 1‐methyl‐2‐pyrrolidone, and triethyl phosphate. With a focus on the PVDF/DMAc system, the effects of various additives (i.e., ethanol, glycerol, lithium chloride, lithium perchlorate, and water) on the resulting membrane morphology were investigated. The membrane morphology was examined with scanning electron microscopy. The effect of the dope solution temperature on the membrane morphology was also studied for the various additives used. © 2004 Wiley Periodicals, Inc. J Appl Polym Sci 92: 1782–1789, 2004
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